January Weather in Bissau, Guinea-Bissau

Last updated: August 23, 2025

In January, the average temperature in Bissau, Guinea-Bissau hovers around 26°C (80°F). Enjoy warm days, with temperatures varying from a minimum of 17°C (64°F) to a scorching maximum of 38°C (100°F). Thankfully, the weather is dry, boasting 0 mm (0.0 in) of precipitation during 0 days, and an average humidity level of 57%.

January Temperature in Bissau

In January in Bissau, the average temperature is 26°C (80°F). Maximums can reach 38°C (100°F), and minimums can be as low as 17°C (64°F). This makes it an ideal time for travelers looking to enjoy warm weather while having comfortable evenings.

January Weather in Bissau: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Bissau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bissau, January typically has an average temperature of 26°C (80°F), with highs reaching up to 38°C (100°F) and lows dropping to around 17°C (64°F).

Data source: Temperature data for Bissau generated using information from the Copernicus Climate Change Service.

January Precipitation in Bissau

In Bissau in January, the precipitation amount is 0 mm (0.0 in) during 0 days.

January Precipitation Trends in Bissau

The chart displays monthly precipitation patterns in Bissau, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Bissau, January typically receives around 0 mm (0.0 inches) of precipitation spread over approximately 0 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Bissau

In Bissau in January, humidity is 57%. With an average temperature of 26°C (80°F), this humidity feels like a warm embrace that clings to the skin, making outdoor exploration both invigorating and slightly sticky, requiring visitors to stay hydrated and plan for leisurely breaks in shaded spots.

January Average Humidity in Bissau

This chart illustrates the average monthly humidity levels in Bissau, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Bissau is approximately 57%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Bissau

In Bissau in January, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Bissau.

Maximum UV Index Levels in Bissau for January

The chart shows the monthly maximum UV Index (UVI) for Bissau in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Bissau typically reaches 10, which falls under the very high exposure category.

Data source: Bissau January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Bissau Compares to Other Months

Weather in Bissau varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Bissau, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Bissau, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (80°F)	0 mm (0.0 inches)	57%	very high
February Weather	27°C (82°F)	0 mm (0.0 inches)	64%	very high
March Weather	28°C (83°F)	0 mm (0.0 inches)	64%	extreme
April Weather	29°C (84°F)	0 mm (0.0 inches)	73%	extreme
May Weather	28°C (84°F)	1 mm (0.1 inches)	76%	extreme
June Weather	28°C (84°F)	52 mm (2.0 inches)	80%	extreme
July Weather	27°C (81°F)	453 mm (17.8 inches)	81%	extreme
August Weather	27°C (80°F)	539 mm (21.2 inches)	86%	extreme
September Weather	27°C (81°F)	369 mm (14.5 inches)	84%	extreme
October Weather	28°C (83°F)	134 mm (5.3 inches)	80%	extreme
November Weather	29°C (84°F)	24 mm (0.9 inches)	73%	very high
December Weather	27°C (81°F)	0 mm (0.0 inches)	65%	very high